Cooking apparatus



A. M. DEMUTH.

COOKING APPARATUS. APPLICATION FILED OCT. 1. 1920.

1,393,762. Patented Oct. 18, 1921.

7,512 Imam/,

fined 73.77am

c" 4' we;

UNITED STATES PATENT OFFICE- ALFRED M. DEMUTH, or CHICAGO, ILLINOIS, ASSIGNORVTO DEMUTH manome- TUBING COMPANY, or CHICAGO, ILLINOIS, A CORPORATION orlittnvors.

COOKING APPARATUS.

1,393,762. Application filed october 1,

To all whom it may concern Be it known that I, ALFRED M. DEMUTH, a citizen of the United States, residing'at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cooking Apparatus, of which the following is a specification. l

This invention relates to improvements in cooking apparatus in which articles of food may be cooked entirely in their own juices by means of the heat of boiling or hot water or steam maintained under a predeterm ned degree of pressure, and one of the obgects of the invention is to provide improved means whereby the liquid which is converted into steam may be automatically replenished when necessary, thereby obviating the necessity of-having to fill or supply the same orhaving to watch the apparatus, and also renderingit possible to use the. apparatus with a very small supply of liquid so that the liquid will be quickly converted nto steam or vapor.

A further object is to provide an improved freely movable bafiie or deflector adapted'to maintain the pressure therebeneath at a predetermined degree and operating to direct or deflect the vapor back to the articles being cooked, the deflector having. means associated therewith whereby the vapor when it rises above a predetermined degreewill be vented directly from the cooking chamberandfrom beneath the bafile intothe atmosphere.

' 'Tocthe attainmentof theseyends and the accomplishment .ofother new and juseful objects as-willappear, the invention consists in the featuresof novelty in substantially the construction, combination and. arrange I ment. of the several parts hereinafter more fully described and claimed'and shown in the accompanying drawing illustrating this invention and in which, I i Figure 1 is a view' inside elevation. Fig. 2 is avertical, longitudinal sectional View. j

Fig. 3 is a top plan view of Fig. 1. Referring more particularly to the drawing the' numeral 10 designates a cooking chamber which maybe of any desired size and configuration and constructed of any suitable material, but is preferably oval in cross section and .is constructed of metal. Arranged beneaththe cooking chamber 10 is a supplemental chamber 11, which is Specification of Letters Eaten/c.

1920. Serial No. 414,104.

thereto'i'n anysuitable manner as by means of suitable fastening devices suchas rivets or the like. I

The chamber 11, is adapted tohold asupply of liquid 14, which is converted into steam by means of a suitable burner 15, arranged. beneath the'chamberand the whole apparatus may, if desired, be mounted upon a suitable support 16,.having an opening 17, therethrough over which the cooking apparatus is adapted to "be "set and the support "16, may be mounted upon'suitable legs 18, and provided with a flange 19, encompassmg the opening 17, andwithin which flange 19. the apparatus is adapted to be placed.

The liquid is supplied'to the compartment lh preferablyfrom container or tankg20, which may be of any suitable size and, con-' figuration and is connected with the apparatus in any-suitable manner sujclrfas by.

At .the lower end of means, of a bracket 21.; the. tank 20,- .th ere is provided a tubular e2;- tension 22, which is adapted tofit within a suitable openinglin the wallfof the chamberll, and a cap 23,"may be provided for the extension 22, and which cap is provided Patented Oct. 1 8, 1921."

with a reduced opening 24;, through which i the liquid will flow from thej'tank 20, into the chamber 11. The opening 24 is spaced any desired distance above the bottom of the chamber 11, and maintains the liquid at a predetermined levelin the tank.- This is accomplished by means of thefact that the tank 20, is provided with'a closure 25,- so

that when the liquid 14, in the chamber 11, extends slightly above the opening 24, to close the same the liquid will be arrested from flowing into the chamber .11,- untilthe liquid therein has been consumed.

A liquid gage 26, may be provided for the tank 20, if'desired.

A .draw off pipe 27, is connected atone end with'the bottom 12, of the chamber. 10. This draw off pipe extends "through the chamber ll, and through one wall thereof terminating in afaucet or cock 28, which latterwhen open will permitthe'liquid to be drawn from the chamber 10. l'Vhen cooking articles offood which donot contain much juice and it is desired to retain'the juice within the chamber 10, thereby preventing it from filling the draw ofi pipe 27, a suitable plug 29, may communicating opening between the chainber 10 and the pipe 27. r

The articles of'food 30, to be cooked are placed within the chamber 10, upon the bot--- tom 12,. and a deflector 31, which is prefer ably of a downwardly openingor concaved configuration is placed over the articles so that the edge thereof; will rest upon the articles. The deflector'is of a size andshape to snugly fit within the chamber 10, and yet neath. This deflector or 36, is secured against removal in any suitable manner such as by means of thumb, nuts 37 connected with bolts 38, which latter are pivotally connected as at 39, with the wall of the chamberll, and the bolts 38, pass 7 through or standwithin suitable bifurcations or ears 40, c'arried by the cover or closure 36.

Handles 41,jmay be provided uponthe cover or closure 36.

- In order to ascertain the temperature of.

- the liquid wi hin the chamber- 1 1, a suitable thermometer 42,"inay be provided and a blow oflf'or pet cock43, may also be provided so as to permit the air contained within the chamber 11' to be blown off while the liquid 7 14, is being converted into steam. A. safety blow off 44, may also be provided to permit, ofthe escape of the steam when-the latter rises beyond a predetermined degree and a so connected with the gage and rest against the'arti'clesof food .in the chamber'and operating to direct vapor I pressure gage. 45 is a chamber 11. T V

When it is desired to fill the tank or re-' ceptacle 20, a suitable valve 46, which controls the outlet opening therefrom is closed and when a sufiicient 'amount of liquid-has been placed therein the closure or cover '25, is placed in position, after which the valve 46, is opened and the liquid will flow through the opening24, until it reaches a'predetermined level. .As the liquid is consumed it will be replenished automatically from the supply in the tank or container 20.

' In use, the articles 30, "are placed in the chamber 10, in the manner already described with the battle 31, resting'thereupon. As

the articles commence to cook thesteam or vapor therefromwill rise and will contact with the baffle or deflector 31, to flow therebe provided for closing the without departing from the across and will be deflected by this bafllc back against the articles 30. The deflector 31, together with the tubular member 33, and blow off valve 34, are constructed so as to withstand a predetermined degree of pressure of the steam-0r vapor against the deflector and the blow off valve 34, is set so as to withstand a slightly increased degree of pressure so that when the pressure increases beyond a predetermined degree, the first operation will be to cause the deflector 31, to

rise bodily away from the articles 30, into thedotted line position shown in Fig. 2. If

there is any further increase in pressure the valve 34, will be automatically opened to allow the escape of the steam or vaporfrom beneath the baffle and directly into the atmosphere. When the pressure decreases beneath the baffle 31, the latter will gravitate The tubular member toward the articles. 7

in the cover-36, will 33, having a snug "fit 35 be permitted to rise and fall under the in the baflle caused fluenc'e of the pressure upon by the vapor, and as'the cover 36, is securely held against movement, it will be manifest that thebaflie 31, will have a free movement and will be unsupported except by resting upon the articles or'by beingsupported by the pressure of the steam or vapor therebeneath.

A clean-outopeningniay be-providedin' he bottom of the chamber 11, and a removQ able closure 1 provided for 'such i an 7 opening.

While has herein been shown and described it is to be understood that various changes may be made in the details 'of co nstruction and-1n the combination and arrangement of the' several parts, withln the scope of the claims,

vention. d a What 1s claimed-as new 1s: a

the preferred form of the invention,

spirit of thisine 1. A cooking'apparatus embodying a cook ing chamber, a detached downwardly opening deflector within and extendin -ac1 OSs the chamber, said deflector being a apted to-en circulatingtherea ainst back against the articles of food, a c osure for the chamberya tubular .member connected with the baflie, opening therethrough and extending there apparatus embodying a cookiso articles and serving to direct the vapor circulating thereagainst, back to the articles, a closure for the chamber, and means whereby the vapor beneath the baflie will be discharged directly from the cooking chamber when the pressure therebeneath rises beyond a predetermined degree.

3. A cooking apparatus embodying a cooking chamber, a battle within and extending across the chamber, said baflle being of a concaved configuration snugly fitting within the chamber to be freely moved away from and toward the articles by the action of the vapor thereupon, and serving to direct the vapor circulating thereagainst,-back to the articles, a closure for the chamber, and means whereby the vapor beneath the bafiie will be discharged directly from the cooking chamber when the pressure therebeneatlr rises beyond a predetermined degree.

4. A cooking apparatus embodying a liquid chamber in which the liquid is converted into steam, a cooking chamber extending across the liquid chamber and being out of communication therewith, a liquid supply holder, and means whereby the said supply will automatically maintain the liquid at a predetermined level in the said liquid chamber, the said cooking chamber and liquid supply holder being so disposed with respect to each other that access may be had to either without interfering with the other.

5. A cooking apparatus embodying a liquid chamber in which the liquid is converted into steam, a cooking chamber extending across the liquid chamber and being out of communication therewith, a liquid supply holder, means whereby the said supply will automatically maintain the liquid at a predetermined level in the said liquid chamber, said liquid chamber being closed, and a safety blow off device for the liquid chamber, the

said cooking chamber and liquid supply holder being so disposed with respect to each other that access may be had to either without interfering with the other.

6. A cooking apparatus embodying a closed liquid chamber in which the liquid is converted into vapor, a cooking chamber one wall of which constitutes a wall of the liquid chamber, said chambers being out of communication with each other, a liquid supply receptacle, there being a communicating passage between the supply receptacle and the liquid chamber for automatically maintaining the liquid in the liquid chamber at a predetermined level, said supply receptacle having a filling opening, a closure for said opening, and a valve in the said passage for opening and closing the passage at will, the said cooking chamber and liquid supply receptacle being so disposed with respect to each other that access may be had to either without interfering with the other.

cooking apparatus embodying a cooking chamber, a liquid tank in which the liquid is converted into vapor, said tank and chamber being out of communication with each other and having a common wall therebetween, means operating automatically to maintain the liquid in the tank at a predetermined level, the said means embodying a liquid supply holder, a closure therefor, said supply holder having communication with the tank and discharging thereinto, and a valve in the said communication for opening and closing the same, the said tank and supply holder being so disposed with respect to each other that access may be had to either Without interfering with the other.

In testimony whereof I have signed my name to this specification, on this 22nd day of September A. D. 1920.

ALFRED M. DEMUTH. 

